Zero scale



FIG. 1 is a perspective view showing our new zero scale;

FIG. 2 is a right side view thereof,

FIG. 3 is a left side view thereof,

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The ornamental design for a zero scale, as shown and described.